caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1013013119

William O'rourkeMD

PRACTICEELMHURST MEMORIAL HEALTHCARESee all providers at this practice →
Internal MedicineLombard, ILI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (8)

CCN 147150
Home health agency
CCN 147568
Home health agency
CCN 147998
Home health agency
CCN 140030
Hospital
CCN 140200
Hospital
CCN 140231
Hospital
CCN 140242
Hospital
CCN 140288
Hospital
QUALITY · MIPS · 2024
Final MIPS score
84.9
Quality
75.9
Cost
74.6
Improvement activities
40.0
Promoting interop.
99.0
Payment adjustment
0.42%
Group
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,355
Unique beneficiaries
—
Total services
1,957
Distinct HCPCS
18
Medicare payment
$175K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 3,790 Internal Medicine providers in IL — top quintile (cohort median 760).
PRESCRIBING · PART D · 2024
Total Rx claims
6,883
Beneficiaries
—
Total drug cost
$478K
Distinct drugs
124
Brand share
18.6%
Top prescribed drugs
Amlodipine Besylate515 claims
Atorvastatin Calcium376 claims
Levothyroxine Sodium308 claims
Pantoprazole Sodium259 claims
Rosuvastatin Calcium246 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where William O'rourke's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 22 inbound referrers · 38 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Elaine Spirakes
Internal Medicine · Lombard, IL
65459
Lawrence Barr
Interventional Cardiology · Elmhurst, IL
36361
Barry Lessin
Diagnostic Radiology · Elmhurst, IL
34130
John Cahill
Interventional Cardiology · Elmhurst, IL
31174
WADAS, MARIE24149
WEINBERG, JEROLD2469
Lee Dennis
Diagnostic Radiology · Elmhurst, IL
23104
Pratik Parikh
Interventional Cardiology · Elmhurst, IL
22119
RESIDENTIAL HOME HEALTH ILLINOIS, LLC22100
Phillip Cozzi
Pulmonary Disease · Elmhurst, IL
20140
Apoor Gami
Clinical Cardiac Electrophysiology · Elmhurst, IL
18105
Robert Rauh
Cardiology · Elmhurst, IL
18109
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
ELMHURST MEMORIAL HOSPITAL3464,537
Elaine Spirakes
Internal Medicine · Lombard, IL
65518
David Wasserman
Diagnostic Radiology · Elmhurst, IL
49240
Aloyzas Pakalniskis
Diagnostic Radiology · Elmhurst, IL
47215
Cash Casey
Clinical Cardiac Electrophysiology · Elmhurst, IL
41390
Lawrence Barr
Interventional Cardiology · Elmhurst, IL
38390
Vivek Dave
Diagnostic Radiology · Elmhurst, IL
36144
Barry Lessin
Diagnostic Radiology · Elmhurst, IL
36146
David Morrissey
Diagnostic Radiology · Elmhurst, IL
34129
Elmer Murdock
Interventional Cardiology · Elmhurst, IL
32205
John Cahill
Interventional Cardiology · Elmhurst, IL
30195
WADAS, MARIE26158
Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.